A NOVEL SINGLE-PHASE CASCADED H-BRIDGE INVERTER WITH NEW CELL CONFIGURATION AND REDUCED POWER ELECTRONICS COMPONENTS WITH LOW THD

Arun kumar.M, Kaliamoorthy.M, Brindha.P, Rajasekaran.V, Chandrasekaran.N

Abstract: This project presents Single-phase Cascaded H-Bridge Inverter with minimum number of power electronics devices. The proposed Inverter consists of 4 unidirectional switches and single bidirectional switch in each cell. Single carrier and Multicarrier PWM method is used to generate the multilevel output. The proposed multilevel Inverter is compared with conventional symmetrical CHB, Asymmetrical CHB with binary and trinary configurations. The comparison will be made on the basis of number of components, number of DC sources, number of Balancing capacitors, Switching and conduction losses. The proposed Cascaded H-Bridge Inverter will be simulated using MATLAB/SIMULINK and will be implemented in hardware also using SPARTAN3A DSP

Keywords: Bi-directional Switches, Cascaded H-bridge Inverter, DC to DC Boost Converter, Multi carrier PWM, PV array

DOI: https://doi.org/10.15623/ijret.2014.0319094